Change-speed device and the like



F. H. HOGE CHANGE SPEED DEVICE AND THE LIKE 5 Sheets-Sheet Filed Jan.18', 1923 April 1 1924. v 1,488,985

F. H. HOGE.

CHANGE SPEED DEVICE AND THE LIKE Filed Jan 18. 1923 5 Sheets-Sheet 2April 1 1924.

1,488,985 F. H. HOGE CHANGE SPEED DEVICE AND THE LIKE Flled Jan 18 19235 SheetsSheet 5 April 1, 1924.

F. .H. HOGE CHANGE SPEED DEVICE AND THE LIKE Filed Jam 18, 1923 ssheets-sheet 4 April 1 1924. 1,488,985

. F. H. HOGE 1 CHANGE SPEED DEVICE AND THE LIKE Filed Jan. 18, 1923 5Sheets-Sheet 5 Patented Apr. 1, 1924.

Nrrao STATES PATENT OFFICE;

FREDERICK H. HOGE, OF CHICAGO, ILL'DTOIS, ASSIGNOR TO W. L JONIS FOUNDRYd:

EACHINE COMPANY, E CHICAGO, ILLINOIS, A CORPORATION OF ILL-D1015.

CHANGE-SP DEVICE AND THE Application filed January 18, 1923. Serial No.618,335.

To all whom it may GGMQWH Be it known that l, l nnonniorc H. Hoes, acitizen of the United States, residing at Chicago, in the county of Cookand State a of Illinois, have invented certain new and usefulImprovements in Change-Speed Devices and the like, of which thefollowing is a specification.

This invention has to do with certain imw provements in gear speedchange devices such as are used for either decreasing or increasing thespeed of rotation with corresponding increase or decrease of torque.

The invention has reference particularly w to improvements in thebearing arrangements by which. the shafts and gears are journaled withinthe casing. In this con 8 nection, it is an object to provide aconstruction in which the bearings for the back gears and shafts may becarried independ ently of the casing heads, so that the support of theseback gear bearings and shafts and the strains which come upon them maybe very easily taken care of and without 3% the necessity of makinspecial provision for the same within the eads of the casing proper.

In connection with this feature off-the invention, I have provided forthe back gears 30 independent of the heads of the casing itself. Thesewebs may be readily supported by and centered within the barrel or drumrtion of the casing and enclosed and held in. lace by the casing headproper.

nother feature of the invention consists in the provision of aconstruction and arrangement such that the bearings for the difl'erentshafts are independent of each other within those cases in which saidshafts happen to be in alignment with each other. This will make itunnecessary to secure exact alignment of the shafts, and in caseeither'shaft should be slightly out of align-' ment, this fact will notinterfere with a proper and perfect running of the other Other featuresof the invention will appear from a detailed descri tion of the same,

and shafts a sense of journal webs or plates which consists in theeatures of 'construction and combinations of parts hereinafter describedand claimed.

In the drawings:

Figure 1 shows a longitudinal section through a gear speed reducingmachine can bodying the features of the present invention and withinwhich machine revision is made for change of speed by t e use of only asingle set ofback gears and shafts;

Fig. 2 shows a section taken on the line 22 of Fig. 1, looking in thedirection of the arrows;

Fig. 3 shows a longitudinal section. corprovision is made therein for cange of speed by the use of three sets ofhaclt gears and shafts intandem; v

car

The casing includes a central or barrel section 8 having the'end flanges9 and 10 at the high and lows d ends respectively There are also provied the high speed end head 11 and the low speed end head 12 which setsnugly into the flanges 9 and 10. respectively so as to close the endsof the casing.

The high speed shaft 6 passes throu h the head 11 within which it isjournals 1) a roller bearing 13, and the low s 'eed sha t 7 asses throuh the head 12' wit iin which it ion 15 is located onthe inner end of thehigh 5 eed shaft. and a ear 16 on the inner responding to Fig. l withthe exce tion that y 1s journaled y a roller bearing 14. A pinthese backgear sets numbered 22, 23 and 24- of suitable bearings such as theroller bearings 20 and 21 respectively. It will be observed that thealignment of each shaft is thus entirely independent of the other andthe size and character of the bearings for the two shafts can beregulated according to their independent needs. I

Located within the casing is a series of one ormore back gear sets whichwork between the pinion 15 and gear 16. Three of are illustrated,located equi-distantly around the shafts so as to produce a perfectlybal-.

' opening 28 of the web 17. The ends 29 and in appropriate manner.

30 of each of these shafts 27 are journaled In order to support thesejournals entirely separate from the casing heads 11 and 12, I haveprovided the bearing plates 31 and 32'respectively,

. which are located within the casing flanges 9 and 10 and adjacent tothe casing heads 11 and 12. The bearing plate 31 carries a rollerbearing 33 for each of the shaft ends 29, and the plate 32 carries aroller bearing 34 for each of the shaft ends 30. If desired, the casinheads. 11 and 12 may be provided with a utments 35 and 36 respectivelyin alignment with the various back gear shafts 27 so as to preventundesirable end play in said shafts and the gears and pinions carried bythem.

In the construction shown in Figs. 3, 4 and 5, the high and low speedshafts 37 and 38 respectively are placed in alignment with each other,but they are separated by an intermediate back gear shaft 39 with whichthey are also in alignment. The central portion 40 of the casing isprovided with the end flanges 41 and 42 similar tothe arrangementpreviously ex lained, and the high speed and low spee casing heads 43and 44 are seated within the flanges 41 and 42 as in the previouslyexplained construction.

In thepresent case a dish shaped bearin plate 45 is seated in the high sed en ange 41, and another dish shap plate 46 is seated in the low speeden ange 42. Each of these bearing plates is bulgedinwardly far enough toreach substantiallybeyond the inner end of the corresponding shaft 37 or38 as the case may .be so as to be able to support said shaft with asuitable hearing.

or example, the high speed shaft 37 has its innerend 47 journa ed in theplate 45 by the use of the roller bearing 48 and the inner end 49 of thelow speed shaft '38 has its inner end bearin journaled in. the plate 46by the use of the roller bearing 50.

The high speed shaft 37 is rovided with the pinion 51 at'its inner enand the low speed shaft 38 is provided with the gear 52 at its innerend.

The intermediate shaft 39 has its high speed end 53 journaled in theplate 45 by t e use of the roller bearing 54 and has its low speed end55 journaled in the plate 46 by the use of the roller bearing 56.Consequently, the alignment of the high speed and low speed shafts andof the intermediate shaft 39 are independent of each other, and thebearings which support these shafts may be adopted with a view to theconditions under which they operate.

The high speed shaft has its outer end journaled in the casing head 43by the. use of the roller bearing 57, and the low'speed shaft has itsouter end journaled in the casing head 44 by the use of the rollerbearing 58.

. he intermediate shaft 39 carries a gear 59 at its high speed end and apinion 60 at its low speed end. Between the high speed pinion 51 and thegear 59 is located one or more back shafts 61 and between the pinion 60and the gear'52 is located one or more back shafts 62. Each of theshafts 61 car ries a gear 63 meshing with the high speed pinion 51 andalso a pinion 64 meshing with the gear 59; and each of the shafts 62carries a gear 65 meshing with the pinion 60 and a pinion 66 meshingwith the gear 52. It is preferred that'there'be provided three each ofthe shafts 61 and 62 together with their gears and pinions and locatedequialso carries a roller bearing 70 for the inner end 71 of each of theshafts 62. The central portion of the flange or web 67 is open as at 72tofreely pass he intermediate shaft 39. A hearing plate 73 is set intothe flange 41 at the high speed end of the machine and another bearingplate 74 is set into the flange 42 at the low speed end of they machine.The bearing plate 73 carries a roller bearing 75 for the outer end 76 ofeach of the shafts 61 and the bearing plate 74 carries a roller bearing77 for the outer end 78 of each of the shafts 62. The high speed and lowspeed end heads 43 and 44 respectively are also provided with lugs orabutments in alignment with. the various s'lj gfts for reasons similarto those already explained with respect to the construction shown inFigs. 1 and 2. i

While I have herein shown and described only certain embodiments of thefeatures of my-present invention, still I do not limit myself to thesame except as I ma do so in the claims. For example, while I ave herein illustrated in the drawings constructions using spur gears,nevertheless, I contemplate the use of any other suitable forms of gearssuch as herring bone, helical, etc.

I claim:

1. A speed change device of the character specified comprising incombination a cylindrical casing having a circular flange at each end, ahigh speed end casing head seated into the flange at one end, a lowspeed end casing head seated into the flange at the other end, a highspeed, shaft extending centrally through the high speed end casing headand journaled therein, a low speed shaft extending centrally through thelow speed end casing head and journaled therein in alignment with thehigh speed shaft, independent journals for.

the inner ends of said shafts supported by the casing, a pinion on theinner end of the high speed shaft, a gear on the inner end of the lowspeed shaft, a plurality of back gear shafts and gears within the casinglying end, a high parallel to the high speed and low speed shafts, gearand pinion connections on said back gear shaftsand in conjunction withthe high speed shaft pinion and the low speed shaft gear aforesaid,bearin plates seated within the casing end hea s, journals in saidplates for the back gear shafts aforesaid, whereb the'hack gear shaftsare supported and ournaled independently of the casin end heads, andabutments on the inner aces of the casing end heads in ali ment with theback gear shafts and serving to limit end movement thereof,substantially as described.

2. A speed change device of the character specified com rising incombination a cylindrical casing iaving a circular flange at each. speedend casin head seated into the ange at one end, a fow speed and easinghead seated into the flange at the other end, a high speed shaftextendin through the high speed .end casing head an 'journaled therein,a low speed shaft extending through the low speed end casinghead andjournaled therein in alignment with the hi h speed shaft, a pinion onthe inner end 0 the high speed shaft, a gear on the inner end of the lowspeed shaft,-a plurality of back gear shafts and gears within the casinglying parallel to the high speed and low speed shafts, gear and pinionconnections on said back gear shafts and in con-' junction with the hi hspeed shaft pinion and the low speed sha gear aforesaid, bearing.vplates seated within the casing end heads, journals in saidplates forthe back.

gearshafts aforesaid, whereby the back gear speed shaft extending throngshafts are supported and jonrnaled independently of t e casing endheads, and abutments on the inner faces of the casing end heads inalignment with the back gear shafts and servin to limit end movementthereof, substantial y as described.

3. A speed change device of the character s ecified comprising incombination a cylin-' rical casing having a circular flange at each end,a high speed end casing head seated into the flange at one end, a lowspeed end casing head seated into the flange at the other end, a high seed shaft extending through the high spee end casing head and journaledtherein, a low speed shaft extending through the low speed and easing.head and journaled therein in alignment with the high s eed shaft, apinion on the inner end of the high speed shaft, a gear on the inner endof the low speed shaft, a plurality of back gear shafts and gears withinthe casing lying parallel to the high speed and low speed shafts, gearand pinion connections on said back gear shafts and in conjunction withthe high speed shaft pinion and the low speed shaft gear aforesaid,bearing plates seated within the casing end heads, and journals in saidlates for the back gear shafts aforesaid, whereby the back gear shaftsare su ported and journaled independently oft e casing end heads,substantially as described.

4. A change speed device of the character described comprising incombination a cylindrical casing, a high speed end casing head seatedagainst the cylindrical casin at one end, a low speed end casing heaseated againstthe casing at the other end, a high speed shaft extendingthrough the high speed end casing head and journaled therein, a lowspeed shaft extending through the low speed end casing head andjournaled therein, in alignment with the hi h speed of the journals insaid plates for the back gear shafts aforesaid, whereby the 'back gearshafts are supported and journaled independently of the casing endheads, substantially as described.

5. A change speed device of the character described comprisin incombination a cylin- Y drical casing, a. big speed end casinghead seateda ainst the cylindrical casin at one. end, a ow speed end casing heseated are lie

against the casing at the other end, a high h the high speed end casing:head-and journaled therein, a low speed shaft extending through thepinion and the low speed shaft gear aforelow speed end casing head andjournaled said, bearing plates in conjunction with the- 10 therein, apinion on the inner end of the casing end heads, and journals in saidplates high speed shaft, a gear on the inner end of for the back gearshafts aforesaid, whereby 5 the low speed shaft, a plurality of backgear the back gear shafts are supported and shafts and gears within thecasing, gear and journaled independently of the casing end pinionconnections on said back gear shafts heads, substantially as described.a and in conjunction with the high speed shaft FREDERICK H. HOGE.

